ASTROSAT CZTI

Data Quality Report

Orbit 40897

Creation date: 2024-06-27T22:21:54.406060
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_097T01_9000005574_40897cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40897cztM0_level2_quad_clean.evt
Size (bytes)300,870,72082,474,560
Size286.9 MB 78.7 MB
Events in quadrant A2,635,658552,097
Events in quadrant B2,775,997568,065
Events in quadrant C2,493,251541,939
Events in quadrant D2,850,629491,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107333
B0114942
C0104062
D0116782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489690.183824%
B48961182.410131%
C4896491.000817%
D4896671.368464%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6988 4897 4 4 0.06% 0.08%
B 6988 4897 73 73 1.04% 1.49%
C 6988 4897 42 42 0.60% 0.86%
D 6988 4897 53 53 0.76% 1.08%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 474845 4215.8 549 539 112.5
A 13 6 12304 104.57 549 539 112.5
A 13 248 11947 101.39 549 539 112.5
B 4 171 422398 3958.53 547 532 106.6
B 5 255 76366 711.58 547 532 106.6
B 0 245 50331 467.28 547 532 106.6
C 15 214 208233 1644.06 536 539 126.3
C 0 10 133154 1049.75 536 539 126.3
C 9 54 45896 359.04 536 539 126.3
D 12 79 301945 2291.11 529 512 131.6
D 12 128 226883 1720.58 529 512 131.6
D 13 171 49067 369.05 529 512 131.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter